2 Bones (Ulna & Radius)

Question 1

What is the location and structure of the radius?

Answer 1

1. Located in the lateral antebrachium, one of the 2 bones of the antebrachium

2. Forms 4 joints:
humeroradial joint 
proximal radioulnar joint
distal radioulnar joint
radiocarpal joint

Question 2

What are the proximal features of the radius?

Answer 2

Radial head
Radial neck
Radial tuberosity

Question 3

What are the 3 borders of the radius?

Answer 3

Anterior
Posterior
Interosseous

Question 4

What are the 3 surfaces of the radius?

Answer 4

Anterior
Posterior
Lateral

Question 5

What are the distal features of the radius?

Answer 5

Ulnar notch
Radial styloid process
Dorsal / Lister’s tubercle

Question 6

What is the location and structure of the ulna?

Answer 6

1. Located in the medial antebrachium, one of the 2 bones of the antebrachium
2. Forms 3 joints:
   humeroulnar
   proximal radioulnar
   distal radioulnar

Question 7

What are the proximal features of the ulna?

Answer 7

Olecranon process
Coranoid process
Trochlear notch
Radial notch
Ulnar tuberosity
Supinator crest
Supinator fossa

Question 8

What are the 3 borders of the ulna?

Answer 8

Anterior
Posterior
Interosseous

Question 9

What are the 3 surfaces of the ulna?

Answer 9

Anterior
Posterior
Medial

Question 10

What are the distal features of the ulna?

Answer 10

Ulnar head
Ulnar styloid process
Articular surface